Guillaume Guillaume - 5 months ago 29
JSON Question

How to use the Wayback Machine API with URL query string?

I'm trying to get information with the wayback machine API.

The webpage I'm testing the API with is :

http://www.ifop.com/?option=com_publication&type=poll&id=3367


As you can see here, the webpage is already archived :

https://web.archive.org/web/*/http://www.ifop.com/?option=com_publication&type=poll&id=3367


So when I'm using the API :

http://archive.org/wayback/available?url=http://www.ifop.com/?option=com_publication&type=poll&id=3367


I should get my information but the API answer is empty as if the webpage wasn't archived...

{"archived_snapshots":{}}


I tried to replace
&
with
&
but it's still empty...

So my question is : how to use the Wayback Machine API with URL query string ?

WBT WBT
Answer

Problem:
The ampersands, even in &, are parsed as additional parameters to the API rather than as part of the url parameter.

Solution:
Use %26 to encode the ampersand. Similarly encode the rest of the URL.

Your request becomes: http://archive.org/wayback/available?url=http%3A%2F%2Fwww.ifop.com%2F%3Foption%3Dcom_publication%26type%3Dpoll%26id%3D3367